Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
27951 (1997 OG2)
Classification: Main-belt Asteroid          SPK-ID: 2027951
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026837828984727 3.555e-08  
a 2.382374629206331 7.5434e-09 au
q 1.899505927077446 8.6289e-08 au
i 1.934333360070102 3.5919e-06 deg
node 188.0034745161275 0.00010946 deg
peri 122.3500232338703 0.00010987 deg
M 77.90887726523613 7.8841e-06 deg
tp 2458709.831509576271
(2019-Aug-14.33150958)
2.9646e-05 TDB
period 1343.115960923164
3.68
6.3791e-06
1.747e-08
d
yr
n .2680334464587564 1.273e-09 deg/d
Q 2.865243331335217 9.0723e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      8662 days (23.72 yr)  
   first obs. used      1996-03-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53668  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:43:07  

Additional Information
 Earth MOID = .885973 au 
 Jupiter MOID = 2.40648 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456930.5 (2014-Sep-30.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027304730606606 3.547e-08  
q 1.899319284950892 8.6103e-08 au
tp 2457367.738042217361
(2015-Dec-11.23804222)
3.16e-05 TDB
node 188.023955473199 0.00010943 deg
peri 122.569178858754 0.00010983 deg
i 1.934279662828889 3.5933e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      8662 days (23.72 yr)  
   first obs. used      1996-03-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53668  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:43:07  

Additional Information
 Jupiter MOID = 2.40648 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.258120837235026E-15 -3.046861223722349E-15 9.174718518098275E-14 -2.232707770599038E-15 2.996160937466992E-14 -1.183507661898735E-15
q -3.046861223722349E-15 7.41378736943264E-15 -2.955681979781426E-13 6.031105353817309E-15 -9.778006300008406E-14 2.910718164338023E-15
tp 9.174718518098275E-14 -2.955681979781426E-13 9.985601631863787E-10 2.134846537439772E-12 3.093310648587516E-10 -1.259592722113214E-13
node -2.232707770599038E-15 6.031105353817309E-15 2.134846537439772E-12 1.197454370882235E-8 -1.196674142838104E-8 -6.848155779568897E-11
peri 2.996160937466992E-14 -9.778006300008406E-14 3.093310648587516E-10 -1.196674142838104E-8 1.206309731752222E-8 6.842029399190092E-11
i -1.183507661898735E-15 2.910718164338023E-15 -1.259592722113214E-13 -6.848155779568897E-11 6.842029399190092E-11 1.291152805375452E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO337494  

27951 (1997 OG2)          Discovered 1997-Jul-30 by ODAS at Caussols
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 OG2 = 2000 GV21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-25 19:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin